US1418110A - Assighgb - Google Patents

Description

J. C. WAHL. i

' CALCULATING MACHINE.

APP LICATION FILED APR.19 192l- Patented May 30, 1922.

LU z\ [3'1 w W I Q n a q INVENTUR MAM L 9 AMZ H15 ATTURNEY entra n stares JOHN o." w ntL, or cnrcneo, trimmers,

ears-at caries.

ASSIGNGR T0 'REMINGTON ACCOUNTING MACHINE CORPORATION, OF NEW YORK, N. Y., A CORECRATION OF NEVJ' YORK.

canc'ona rrne MACHINE.

Application filed, A r-n 19,

To all whom it may concern: I

'Be it known. that I, JOHN C. IVAHL, citizen of the United States, and resident of Chicago, in the county of Cook and State of- Illinois, have invented certain new and useful Improvements in Calculating Machines, of which the following is a specification.

My invention relates to calculating machines and it is embodied in the present instance in a Remington-VVahl combined typewriting and calculating machine of the character known on the market as a cross footer, and which machine is disclosed in my Patent #1,270,471, dated June 25, 1918; although it should be understood that the invention is not restricted to its embodiment in such machines. p

In the construction disclosed in -my said patent certain. of the vertical totalizers which are carried by and adjustable along the main truck or carriage, are provided with two different sized cams detachably fixed thereto. These cams are adapted during the travel of the carriage to coact with' a follower which formspart of the actuator-control, or gear shifting mechanism, for the cross totalizer. When a cam coacts with the follower the movement of the lat.- ter actuates the control mechanism to bring about, at the operation of a numeral key, either subtraction in the cross totalizer, or

. to disconnect and render the latter inoper- .ative, depending on the character or size of the cam.

In accordance with the presentinvention I provide on each vertical totalizer, or on each of a number of dummies which may be substituted forsuch totalizers if desired, a. cam which is adjustably mounted thereon so that it may be set to coact with affollower such as that referred to above, in thesame manner as the two different sized cams disclosed in said patent, and also to obtain a setting of each of said adjustable cams for addition. In the construction disclosed in my Patent #1,34:9,024:, dated August 10, 1920, I have embodied two adjustable cams on each vertical totalizer to coact with the control mechanisms of two cross totalizers.

One of the main objects of my present in vention is to provide an improved adjustable cam mechanism of the general character specified.

A further object of the invention may be stated in general terms to be to provide sim- Specification of Letters Patent.

Patented May 30, 1922. 1921. Serial No. 462,621;

' ple, strong and eflicient means for affording anism, and in which parts are not apt to he come accidentally detached from the machine.

To the above and other ends which will hereinafterappear, my invention consists in .the features of construction, arrangements of parts and combinations of devices to be set forth in the following description and more particularly pointed out in the appended claims.

In the accompanying drawings wherein like reference numerals indicate correspond in parts in the variousviews,

I ig. 1 is a detail fragmentary front view showing a portion of a Remington- 21111 cross footing machine embodying my invention. 1

Fig. 2 is an enlargeddetail front view, with parts broken away, of one of the vertical totalizers shown detached. i Fig. 3 is a side view of the same with parts omitted, and parts in section on line 3-3 of Fig. 2 and looking in the direction of the arrow at said line.

Fig. l is a horizontal, sectional view of the same taken on the line t l of Fig. 2, and

looking in the direction of the arrow at vertical sectional view of the sametaken on the line of Fig. 2, and looking in the I direction of the arrow at said line.

In the drawings I have illustratedv only so much of a Remingtonam cross footing machine as may be necessary to arrive at an understanding of my invention in its embodiment therein; various of the details of said machinenot shown in the accompanying drawings being well known .in the art and fully illustrated inmy hereinbefore mentioned Patent #LQ'FOAF 1. V

' It will be understood that, in the present instance, the follower 1 carried by a crank arm 2 whichis mounted on a rock shaft piv-. otedin the fixed actuator frame 3, may be connected in the usual manner with the actuator-control, or gear shifting mechanism of illustrated in my said Patent #1,270,-1i71. As is well understood, the follower 1 is moved upward by a spring to its highest po-- sition where itsets the control mechanism of the cross footer for addition and it can be moved downward under the action of a con trolling cam to its lowest position where it sets said control mechanism for subtrzmtion. An intermediate position of said. follower under control. of a cam results in said control mechanism being set to disconnect the actuator of the cross footer.

The member 1 which is, or may be, of the usual construction, and .is sometimes referred to as.the vertical or main truck, is connected to travel with the typewriter carriage. One or more so-called vertical totalizers 5 are detachably mounted on the truck 4, and each is adjustable to different set positions along the truck, where it may be held by a spring-pressed, hand-released, latch (5 adapted to engage teeth '7 on the truck.

The adjustable rain of my invention, which coacts with the follower 1 to automatically position the actuator-control or gear shift-inpmechanism, in some instances is mounted on each vertical totalizer 5. In other instances it is mounted on each socalled dummy, which may comprise a frame such as the frame of a totalizer 5 but which contains no totalizer mechanism therein and merely constitutes an adjustable carrier for the adjustable cam, and for other parts, such for example, as the heel 8 for the pick-up beam (not shown). Each of these dummies is intended to be used in the place of a tot-alizer 5 when the character of the work is such that no computation is to be entered in a vertical. totalizer within the field occupied by the dummy. lVith this explanation in mind it will be understood that when I refer herein to a carrier for the cam, such term is intended. to apply to the support on which the cam is adj ust ably mounted, whether such support be a totalizer 5, a dummy or other form of support for the cam.

The frame of a to'talizer 5, or of a dummy, has its side plates 9 apertured at 10 to receive and have seated therein lugs or reduced end portions 11 of a vertically disposed supporting or anchorage plate 12, thus fixedly securing said plate to the frame. The front face of this plate 12 is provided. with three sets of depressions 13, 14 and 15 arranged at different elevations; one depression of each set being situated near an end. of the plate 12. Each of these depressions extends only partly through the plate 12, and is formed with parallel upper and lower side walls 16. A cam plate 17, arranged parallel with the plate 12, has a cam 18 which in the present instance is at the lower edge thereof. This cam plate is made with two rearwardly extending projections 19, each havingparallel upper and lower side walls 20. One of these projections is located near each end of the cam plate in a position to engage in any one of the. depressions 13, 14 or 15 at the corresponding end of the plate 12,and to fit snugly between the upper and lower side walls 16 of the depression and interlock therewith to prevent any up-anddown movement of the cam plate on the supporting plate 12. Each projection 19 may be made by stamping a depression in the front face of the cam plate and crowding the metal at the opposite side of said plate into a die, leaving a strong engaging projection 19 attached at all sides to the plate, and one which at its upper and lower sides fits firmly between and interlocks with the walls 16 of the depression in which it may be seated. The ends 21 of the cam plate 17 are received between and coact with the parallel side plates 9 of the frame. to prevent a longitudinal displacement of the cam plate. The plate 1'? has an upright slot 22 therein about midway in the length thereof, the ends of the slot being; closed. El. threaded spindle, pin or stud 23 passes freely through this slot 22 and riveted at its rear end, as at 24, to the fixed plate 12. A thumb nut 25 is threaded on the spindle 23 and bears against the front face of the cam plate and forces it rearwardly so as to seat, and maintain seated, the projections 19 in any set of depressions 13, 1a or 15, depending on the up and down position to which the cam plate is adjusted before the thumb nut is tightened. By clamping the platcs'lT and 12 tog-ether by the thumb nut, the cam plate is accurately located and firmly held in its adjusted position by the interlocking; connections between it and the supporting or anchorage plate 12. After backing up the thumb nut on its stud or spindle, the cam plate may be moved forwardly to disengage the projections 19. The cam plate may then be re-adjustc-d to another position and the projections seated in another set of deprcssions by adjusting the thumb nut rearwardly. in Fig". 2 the cam plate is shown set in the lowest of its three positions which corresponds to subtraction; and its middle or disconnect position and its highest or addition position, are indicated by "broken lines.

It will be understood that the extreme positions of the cam, in a measure, are determined by the closed ends of the slot 22, and

that said closed. ends also prevent the cam plate from dropping from the machine, or from being disconnected from its carrier when the thumb nut is backed-up and. the projections 19 are ;lisengaged from the supporting plate 12.

In order to prevent the thumb nut from being accidentally removed from its spindle I provide means for limiting the backing-up I of the nut.

In the present instance such means consist in reducing and threading the forward end portion of the spindle 23, as indicated at 26, to receive a second nut 27 of slightly greater diameter than the main body portion of. the'spindle. This nut 27 is received in an opening 28 in the outer end of the thumb nut, and is adapted to coact with the bottom wall 29 of said opening to limit the extent to which a thumb nut may be backed-up, and thus prevent it from being accidentally removed from its spindle. Fig. 2, the nuts 25 and 27 are removed in order better to show other parts.

In order to aid m'efiecting the proper adjustment of the cam to any one of the three positions'to which it is intended it may be adjusted in the present instance, I have provided indices or symbols S, D, A, arranged successively in the order named, on the cam plate and beginning at the top and reading down. These symbols are located adjacent to the slot 22 and each is adapted to be brought substantially into register with the spindle 23 or the thumb nut thereon. This enables the operator toreadily determine the point of adjustment of the cam in order to bring about an operation of the control mechanism of the actuator for the cross-foot totalizer for addition, subtraction or disconnect, accordingly as the symbol A, S or D is brought opposite the thumb nut.

Various changes may be made without departing from my invention.

What I claim as new and desire to secure by Letters Patent, is,

1. In a calculating machine, the combina tion of a carriage, a follower forming part of a totalizer-actuator control-mechanism, a carrier adjustable to different positions along the carriage, a plate carried by said carrier and having a cam co-operative with said follower during the travel of the carriage to automatically shift said follower, and means for affording an adjustment of said. plate on its carrier to different set positions and for holding it in any of said positions,

said means comprising a threaded stud secured to the carrier and passing freely" through a slot with closed ends in said cam plate to permit an adjustmentof the plate relatively to the stud but to limit the extent of such adjustment prevent the plate from dropping from the stud and being acci-f dentally detached from. the machine, and a thumb screw on said stud to aid in holding the cam plate in its adjusted position. 2. In a calculating machine, the combination of a carriage, a follower forming part of the totalizer-actuator control-mechanism, a carrier adjustable to different positions along the carriage, a plate carried by said carrier and having a cam co-operative with said follower during the travel of the carriage to automatically shift said follower, and means for affording an adjustment of said plate on itscarrier to different set positions and forholding it in any of said positions, said means comprising projections struck up fromv the body portion of said (321.111 plate and each having parallel upper and lower side walls, an anchorage plate secured to said carrier and provided with setsv of depressions at different elevations and which extend only partly through the plate, each depression having parallel upper and lower walls that conform to the corresponding walls "on a projection on the cam plate, a threaded stud secured to said anchorage plate and extending freely through a slot with closed ends formed in said cam plate, and a thumb nut on said threaded stud and adapted to bear against the cam plate and hold it in its set position with the projections thereon seated in one or another of the sets of depressions at different elevations in the anchorage plate. I

3. In a calculating machine, the combination of a carriage, a carrier carried thereby and adjustable thereon, an anchorage plate secured to said carrier, a plate having a cam thereon, said last mentioned plate being adjustable to three different positions on the anchorage plate, i. e. to an addition position, a subtraction position, and a disconnect position, means which interlock to hold the cam plate to the anchorage plate when the former is clamped against the latter, a threaded stud secured to the anchorage plate and passing freely through a slot with closed ends in said cam plate, a thumb nut on said stud and which bears against the cam plate to clamp it against the anchorage plate, a second nut on said stud to limit the backing or unthreading of the thumb nut and thus prevent an accidental detachment thereof from the carrier, and a follower for a totalizer-actuator control-mechanism with which followersaid cam is adapted to coact during the travel of the carriage.

4. In a calculating machine, the combination of a carriage, a carrier carried thereby and adjustable thereon, an anchorage plate secured to said carrier, a plate having a cam thereon, said last mentioned plate being adjustable to three difierent positions on the anchorage plate, i. e. to an addition position, a subtraction position, and a disconnect position, means which interlock to hold the cam plate to the anchorage plate when the former is clamped against the latter, a threaded stud secured to the anchorage plate and passing freely through a slot with closed ends in said cam plate to permit an adjustment of the plate relatively to the stud but to limit the extent of such adjustment and prevent the plate from dropping from the stud and being accidentally detached from the machine, a thumb nut on said stud and which bears against the cam tion, subtraction, OI disconnect osi 10 plate to clamp it against the anchorage plate, tion.

a second nut on sand stud to limit the back- Signed at Chicago, in the county of: Cook, ing or unthreading of the thumb nut and and State of Illinois, this 15th day of April,

thus prevent an accidental detachment there- A. D. 1921. of from the carrier, and symbols or indices JOHN C. WAHL on said cam plate and which are adapted Witnesses:

to register With a part on said carrier to in- VAN D. TEFFT, dicate whether the cam is set in the addi- E. G. WVILLIA MS.

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